SDExplorer

SkyDrive Explorer
Version 2.1.0.102
Updated May 22, 2010
Added Mar. 17, 2010
Developer/Homepage
File Size : 2.0 Mb
Compatibility : Windows Vista/Windows Server 2003 and 2008/Windows 7
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From the author's site, "SDExplorer (formerly SkyDrive Explorer) is a free, easy-to-use, but very powerful extension for Windows Explorer. With SDExplorer you can make any every-day operations with your documents from Microsoft Live SkyDrive service using Windows Explorer, as if they were on your computer.

Moreover you don't need to install and configure any additional programs or ActiveX components. SDExplorer will organize the interaction with the online storage itself."
View more screenshots at the author's site here.
Read the author's FAQs page to see possible 'limitation'/differences, as there is a free version of SDExplorer vs. the 'Pro' Version (which is not freeware).